Fixed some build warnings; slightly improved python search

CMakeLists.txt

@@ -314,6 +314,9 @@ endif()
 #  Detect 3rd-party tools and libraries
 # ----------------------------------------------------------------------------
 
+# IO libraries
+include(cmake/OpenCVIOLibs.cmake REQUIRED)
+
 #Graphic libraries
 set(HAVE_OPENGL 0)
 if(UNIX)
@@ -433,9 +436,6 @@ if(UNIX)
     endif()
 endif()
 
-# IO libraries
-include(cmake/OpenCVIOLibs.cmake REQUIRED)
-
 #################### LATEX for dpf documentation ##################
 if(BUILD_DOCS)
   include(cmake/OpenCVFindLATEX.cmake REQUIRED)
@@ -814,7 +814,7 @@ status("  Python interpreter:"  PYTHON_EXECUTABLE        THEN "${PYTHON_EXECUTAB
 status("")
 status("  Interfaces:")
 status("    Python:"              HAVE_opencv_python THEN YES ELSE NO)
-status("    Python numpy:"        PYTHON_USE_NUMPY THEN YES ELSE "NO (Python wrappers will not be generated)")
+status("    Python numpy:"        PYTHON_USE_NUMPY THEN YES ELSE "NO (Python wrappers can not be generated)")
 if(ANDROID)
   status("    Java:" HAVE_opencv_java THEN YES ELSE NO)
 endif()

cmake/OpenCVDetectPython.cmake

@@ -1,10 +1,16 @@
 find_host_package(PythonInterp)
-find_host_package(PythonLibs)
 
+set(PYTHON_USE_NUMPY 0)
+set(HAVE_SPHINX 0)
+
+if(PYTHON_EXECUTABLE)
+  if(NOT ANDROID AND NOT IOS)
+    find_host_package(PythonLibs)
     # cmake 2.4 (at least on Ubuntu 8.04 (hardy)) don't define PYTHONLIBS_FOUND
     if(NOT PYTHONLIBS_FOUND AND PYTHON_INCLUDE_PATH)
       set(PYTHONLIBS_FOUND ON)
     endif()
+  endif()
 
   execute_process(COMMAND ${PYTHON_EXECUTABLE} --version
     ERROR_VARIABLE PYTHON_VERSION_FULL
@@ -21,13 +27,16 @@ if(CMAKE_HOST_UNIX)
     else() #debian based assumed, install to the dist-packages.
       set(PYTHON_PACKAGES_PATH lib/python${PYTHON_VERSION_MAJOR_MINOR}/dist-packages CACHE PATH "Where to install the python packages.")
     endif()
-endif()
+  elseif(CMAKE_HOST_WIN32)
-
+    get_filename_component(PYTHON_PATH "${PYTHON_EXECUTABLE}" PATH CACHE)
-if(CMAKE_HOST_WIN32)
+    if(NOT EXISTS "${PYTHON_PATH}/Lib/site-packages")
+      unset(PYTHON_PATH)
       get_filename_component(PYTHON_PATH "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${PYTHON_VERSION_MAJOR_MINOR}\\InstallPath]" ABSOLUTE CACHE)
+    endif()
     set(PYTHON_PACKAGES_PATH "${PYTHON_PATH}/Lib/site-packages")
   endif()
 
+  if(NOT ANDROID AND NOT IOS)
     # Attempt to discover the NumPy include directory. If this succeeds, then build python API with NumPy
     execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import os; os.environ['DISTUTILS_USE_SDK']='1'; import numpy.distutils; print numpy.distutils.misc_util.get_numpy_include_dirs()[0]"
                     RESULT_VARIABLE PYTHON_NUMPY_PROCESS
@@ -39,17 +48,17 @@ if(PYTHON_NUMPY_PROCESS EQUAL 0)
       add_definitions(-DPYTHON_USE_NUMPY=1)
       include_directories(AFTER ${PYTHON_NUMPY_INCLUDE_DIRS})
       message(STATUS "    Use NumPy headers from: ${PYTHON_NUMPY_INCLUDE_DIRS}")
-else()
+    endif()
-  set(PYTHON_USE_NUMPY 0)
   endif()
 
+  if(BUILD_DOCS)
     # look for Sphinx
     execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import sphinx; print sphinx.__version__"
                     RESULT_VARIABLE SPHINX_PROCESS
                     OUTPUT_VARIABLE SPHINX_VERSION
                     OUTPUT_STRIP_TRAILING_WHITESPACE)
 
-set(HAVE_SPHINX 0)
+
     if(SPHINX_PROCESS EQUAL 0)
       find_host_program(SPHINX_BUILD sphinx-build)
       if(SPHINX_BUILD)
@@ -57,3 +66,5 @@ if(SPHINX_PROCESS EQUAL 0)
         message(STATUS "    Found Sphinx ${SPHINX_VERSION}: ${SPHINX_BUILD}")
       endif()
     endif()
+  endif(BUILD_DOCS)
+endif(PYTHON_EXECUTABLE)

modules/imgproc/test/test_thresh.cpp

@@ -124,17 +124,23 @@ static void test_threshold( const Mat& _src, Mat& _dst,
     int i, j;
     int depth = _src.depth(), cn = _src.channels();
     int width_n = _src.cols*cn, height = _src.rows;
-    int ithresh = cvFloor(thresh), ithresh2, imaxval = cvRound(maxval);
+    int ithresh = cvFloor(thresh);
+    int imaxval, ithresh2;
     
     if( depth == CV_8U )
     {
         ithresh2 = saturate_cast<uchar>(ithresh);
-        imaxval = saturate_cast<uchar>(imaxval);
+        imaxval = saturate_cast<uchar>(maxval);
     }
     else if( depth == CV_16S )
     {
         ithresh2 = saturate_cast<short>(ithresh);
-        imaxval = saturate_cast<short>(imaxval);
+        imaxval = saturate_cast<short>(maxval);
+    }
+    else
+    {
+        ithresh2 = cvRound(ithresh);
+        imaxval = cvRound(maxval);
     }
 
     assert( depth == CV_8U || depth == CV_16S || depth == CV_32F );

samples/cpp/brief_match_test.cpp

@@ -117,7 +117,7 @@ int main(int argc, const char ** argv)
 
   Mat outimg;
   drawMatches(im2, kpts_2, im1, kpts_1, matches_popcount, outimg, Scalar::all(-1), Scalar::all(-1),
-              reinterpret_cast<const vector<char>&> (outlier_mask));
+              *(const vector<char>*)(void*)(&outlier_mask));
   imshow("matches - popcount - outliers removed", outimg);
 
   Mat warped;

samples/cpp/delaunay2.cpp

@@ -55,8 +55,6 @@ static void locate_point( Mat& img, Subdiv2D& subdiv, Point2f fp, Scalar active_
 {
     int e0=0, vertex=0;
     
-    CvSubdiv2DEdge e00;
-    
     subdiv.locate(fp, e0, vertex);
     
     if( e0 > 0 )

samples/cpp/hybridtrackingsample.cpp

@@ -73,10 +73,9 @@ int main(int argc, char** argv)
 		return 1;
 	}
 
-	FILE* f;
+	FILE* f = 0;
 	VideoCapture cap;
 	char test_file[20] = "";
-	char dir[20] = "";
 
 	if (strcmp(argv[1], "live") != 0)
 	{